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techniques used to generate data \\  Our setup consisted of a TeachSpin Earth's-Field NMR instrument, as well as two variable current inputs and an oscilloscope. The Earth's Field NMR  instrument controlled consisted of a solenoid, gradient coils, and Helmholtz coils, the magnetic field of which could all be varied separately. \textbf{(Insert more detailed figure of these)} A bottle of the substance for which we were performing NMR (in this case, water) was inserted into the center of the solenoid. The solenoid was used to polarize the water. We could adjust the polarization time (time over which a field was applied) using the Earth's Field NMR instrument, and the magnetic field could be varied  by using a variable current input. The field of the Helmholtz coils, which effectively artificially increased or decreased the Earth's magnetic field applied in the sample, was adjusted using a separate variable current input. The gradient coils changed the gradient of the magnetic field in the x, y, and z directions, but the gradient was not varied over the course of the experiment.